Irina Shayk, who is reportedly expecting her first child with boyfriend Bradley Cooper, poses after taking part in the 2016 Victoria's Secret Fashion Show at the Grand Palais in Paris on Nov. 30, 2016.

Patrick Kovarik/AFP/Getty Images

Cheryl Cole Steps Out Amid Pregnancy Rumors

Cheryl Cole turns on the Christmas lights at St. James Church in London during the The Piccadilly Christmas Concert, Nov. 29, 2016.

Xposure/AKM-GSI

Ciara Cradles Her Baby Bump at AMAs

Ciara attends the 2016 American Music Awards at Microsoft Theater in Los Angeles, Nov. 20, 2016.

Frederick M. Brown/Getty Images

Pregnant Mila Kunis Steps Out in LA

Mila Kunis is spotted out and about in Studio City, California, Nov. 15, 2016.

Dunkin D/FAMEFLYNET PICTURES

Tori Spelling Cradles Her Baby Bump

Tori Spelling shows off her baby bump at the Moana World Premier at El Capitan Theatre in Hollywood, California, Nov. 14, 2016.

Koi Sojer/PacificCoastNews

Portman Steps Out in Stripes

Natalie Portman is spotted in Los Feliz, California, Nov. 14, 2016. Natalie is currently expecting her second child with her husband Benjamin Millepied.

Liv Tyler Cradles Her Baby Bump

Anne Hathaway Shares a Pregnant Bikini Photo

Anne Hathaway posted this photo on Instagram with the caption: "Happy 2016 to my beautiful Instafriends! So, posting a bikini pic is a little out of character for me, but just now while I was at the beach I noticed I was being photographed. I figure if this kind of photo is going to be out in the world it should at least be an image that makes me happy (and be one that was taken with my consent. And with a filter :)
Wishing you love, light and blessings for the year ahead!" on Jan. 4, 2016.

annehathaway/Instagram

Chrissy Teigen posted this photo to Instagram, Dec. 26, 2015.

chrissyteigen/Instagram

Ivanka Trump Looks Beautiful Pregnant on the Beach

Ivanka Trump posted this photo with the caption, "Jared and I snuck away together to enjoy a few days of R&amp;R," Dec. 22, 2015.

Chrissy Teigen Steps Out in See-Through Maternity Clothes

Pregnant Ivanka Trump Hits the Red Carpet

A pregnant Ivanka Trump shows off her blossoming bump at the ACE Awards in New York on Nov. 2, 2015.

PapJuice/INFphoto.com

This photo was posted to Chrissy Teigen's Instagram account on Oct. 18, 2015 with the text, "Somebody is early to the party."

chrissyteigen/Instagram

Pregnant Ivanka Trump Hits the Red Carpet in Stilettos

Ivanka Trump attends the 2015 New York City Ballet Fall Gala at David H. Koch Theater at Lincoln Center, Sept. 30, 2015, in New York.

Gilbert Carrasquillo/Getty Images

Kristin Cavallari Flaunts Her Baby Bump in Sparkles

Kristin Cavallari attends The Blonds fashion show during Spring 2016 MADE Fashion Week on Sept. 16, 2015 in New York.

Getty Images

Tom Hardy and His Wife Charlotte Riley Debut Her Baby Bump on the Red Carpet

Tom Hardy and Charlotte Riley attend the premiere of "Legend" at Odeon Leicester Square on Sept. 3, 2015 in London.

Getty Images

Kristin Cavallari Shows Off Her Baby Bump

Kristin Cavallari posted this photo to Instagram on Aug. 16, 2015 with the caption, "Thank you @virginhotelschifor the amazing prenatal massage."

Kristin Cavallari/Instagram

Coco and Ice-T Step Out After Announcing Their Pregnancy

Television Personality Coco Austin and Actor Ice-T are seen in Soho, July 29, 2015, in New York.

Raymond Hall/GC Images/Getty Images

Jaime King Flaunts Her Baby Bump in Overalls

Pregnant Jaime King is spotted in Beverly Hills, Calif. on June 15, 2015.

Cousart/JFXimages/WENN.com

Kristin Cavallari Reveals Her Baby Bump

Kristin Cavallari appears in a photo posted to her Instagram account on June 4, 2015 with the text, "Dressing for the bump now..its out and about!"

kristincavallari/Instagram

Brooklyn Decker Debuts Her Baby Bump

This image appeared on model Brooklyn Decker's Instagram account on May 2, 2015 with the text, "So this happened... #the3ofus."

brooklynddecker/Instagram

Naya Rivera Dresses Up Her Bump

Naya Rivera attends the 101st Annual White House Correspondents' Association Dinner at the Washington Hilton, April 25, 2015, in Washington.

Michael Loccisano/Getty Images

Jennifer Love Hewitt Shows Off Her Baby Bump

Jennifer Love Hewitt, pregnant with her second child, takes a morning stroll with a friend in Los Angeles, April 22, 2015.

Pedro Andrade/PacificCoastNews

Naya Rivera Shows Off Her Belly in a Black Bikini

Pregnant "Glee" actress Maya Rivera and her husband Ryan Dorsey go for a walk in Hawaii on April 17, 2015.

Fame-Flynet/AKM-GSI

Pregnant Jaime King Steps Out in a Sheer Dress

Actress Jaime King attends the Burberry "London in Los Angeles" event at Griffith Observatory, April 16, 2015, in Los Angeles.

Jon Kopaloff/Getty Images

Pregnant Jennifer Love Hewitt Stays Comfortable

A pregnant Jennifer Love Hewitt shows off her growing baby bump while out and about in Santa Monica, Calif., April 9, 2015.

Dmac/FameFlynet Pictures

Pregnant Mila Jovovich Takes Her Dog for a Hike

Pregnant actress Milla Jovovich looks ready to pop while enjoying a hike with her husband Paul W.S. Anderson and their dogs on March 24, 2015 in Los Angeles, Calif. The happy couple are expecting their second child together!

Jill Dillard Prepares to Give Birth to a Son

This photo was posted to the Duggar Family Official Facebook page with this caption: " We are getting so close!!! If you're pregnant will you post your picture here just like Jill has been? We would love to see it and will pray for you and your sweet baby, too!," March 16, 2015.

Duggar Family Official /Facebook

Kate Hudson Greets a Very Pregnant Molly Sims

Model Molly Sims and actress Kate Hudson attend VH1's "Barely Famous" premiere screening and party at The London Hotel, March 12, 2015, in West Hollywood, Calif.

Jeff Kravitz/Getty Images

Alec Baldwin Rubs His Wife's Pregnant Belly

Alec Baldwin and Hilaria Baldwin attend the Bent on Learning 6th Annual Inspire! Gala, March 10, 2015 in New York.

Paul W.S. Anderson Takes a Hike With Pregnant Milla Jovovich

Taylor Swift Shares a Sweet Moment with Jaime King

Jaime King posted this photo to Instagram on March 1, 2015 with the caption, "And @taylorswift will forever be looking over our new baby @kyle_newman -we all love you!!!! Xx".

@jaime_king/Instagram

Jessica Biel a Reveals a Big Baby Bump

Heavily Pregnant Jessica Biel seen wearing dirty denim overalls on the set 'The Devil and The Deep Blue Sea', Feb. 25, 2015 in Los Angeles, Calif. Her big baby bump hasn't seemed to stop the star from working and she appeared to glow as she worked on set.

PacificCoastNews

Tiffani Thiessen Cradles Her Bump

Actress Tiffani Thiessen attends AOL's BUILD Speaker Series at AOL Studios in New York, Feb. 24, 2015, in New York.

Ashlee Simpson and Evan Ross Step Out Amid Pregnancy Rumors

Pregnant Blake Lively Looks Ready to Pop

Blake Lively posted this photo to Instagram on Dec. 16, 2014 with the caption, "Nothing better (or tastier) than an evening spent with friends who share your passion. What you don't see is the epic foodie dice challenge which took place afterward! Such a great night @chefhunghuynh. Thank you! And thank you to the Preserve artisans who supplied our beautiful tools! Who can spot them? (Hint: 4 visible)"

blakelively/Instagram

Pregnant Blake Lively Goes Mad for Plaid

Blake Lively is pictured on Dec. 12, 2014 in New York City.

Jay Rodriguez/dbdpix.com

Vanessa Lachey Is Almost Ready for Baby!

TV personality Vanessa Lachey is spotted while shopping on Dec. 3, 2014 in West Hollywood, Calif. She is expecting her second child with husband, singer Nick Lachey.

Snooki Awaits Baby #2 At Her Son's Second Birthday Party

Kourtney Kardashian Shows Off Her Growing Bump

Kourtney Kardashian shows her baby bump while shopping in the Hamptons in New York on August 5, 2014.

XactpiX/Splash News

Rachel Bilson Shows Off Her Growing Bump

Rachel Bilson and a female friend are seen shopping in Los Angeles, July 31, 2014.

Sam Sharma/PacificCoastNews

Snooki's Baby Bump Is Getting Huge

This photo was posted to Snooki's Instagram feed on July 31, 2014 with the text, "Pretty sure this top doesn't for [sic] anymore. #preggoproblems."

@snookinic/Instagram

Kristen Bell Dresses Up Her Baby Bump

Kristen Bell attends the Lexus Shorts Films presented by The Weinstein Company and Lexus at the Regal Cinemas at L.A. Live, July 30, 2014, in Los Angeles.

JB Lacroix/Getty Images

Pregnant Chelsea Clinton Reaches Out to NYC Kids

Chelsea Clinton speaks to kids and families about the importance of youth community service on July 25, 2014 in New York City.

Athena Torri/Disney Junior

Vanessa Lachey Shows Off Her Baby Bump

Vanessa Lachey posted this photo on Instagram on July 22, 2014 with the caption, "STOP! HAMMER TIME!!! @jennblee made me buy this outfit and I have to say, I'm pretty comfortable!"

@vanessalachey/Instagram

Pregnant Kristen Bell Goes Bike Riding

Kristen Bell walks her bike during a ride with her husband Dax Shepard and son Lincoln in Los Feliz, Calif., July 15, 2014.

Terma/FameFlynet

Kelly Rowland Cradles Her Big Baby Bump

Singer Kelly Rowland appears at the Carmelo Anthony Kehinde Wiley Dinner Hosted by GREY GOOSE at Sunset Tower on July 15, 2014 in West Hollywood, Calif.

Jason Merritt/Getty Images for GREY GOOSE

Rachel Bilson Shows Off Her Cool Maternity Style

Rachel Bilson is seen in Los Angeles, July 14, 2014.

Getty Images

Pregnant Scarlett Johansson Rocks Skinny Jeans

Scarlett Johansson shows off her pregnant belly while exiting her apartment on the Upper East Side in New York City on July 12, 2014.

Splash News

Pregnant Mila Kunis Brunches With Her Mother

Mila Kunis joins her mother Elvira for a Sunday brunch in Los Angeles.

Dean/MRM/NPG.com

Kelsey Grammer's Wife Kayte Is Ready for Baby!

Expectant parents Kelsey Grammer and Kayte Walsh bask in the sun after a shopping trip at Paper Source in Beverly Hills, Calif., July 10, 2014.

AKM-GSI

Snooki Shows Off Her Growing Bump

Nicole 'Snooki' Polizzi shared this adorable image on her Twitter captioned; "No matter what happens in life, I will ALWAYS be a strong mother for my son and future daughter. My life is you," July 10, 2014.

Nicole Polizzi/Twitter

Pregnant Poppy Montgomery Bares Her Bump

Poppy Montgomery at 'Late Show with David Letterman' in New York on July 9, 2014.

Said Elatab / Splash News

Chelsea Clinton Shows Off Her Bump

Chelsea Clinton shows off her growing baby bump as she heads out for breakfast this morning with her husband Marc Mezvinsky in New York City on July 8, 2014.

Elder Ordonez/INFphoto.com

Kourtney Kardashian Reveals Her Bump in a Gold String Bikini

Kourtney Kardashian posted this photo on Instagram on July 7, 2014.

kourtneykardash/Instagram

Stacy Keibler Shows Off Her Growing Bump

Stacy Keibler posted this photo to Instagram on July 6, 2014 with the caption, "#FarmersMarket feast for three!"

@stacykeibler/Instagram

JWOWW Is Ready to Pop!

Roger Matthews and Jenni 'JWoww' Farley are seen leaving their N.J. home, July 1, 2014.

Splash News

Pregnant Stacy Keibler Goes Casual in a Maxi-Dress

Stacy Keibler spotted out and about in Beverly Hills, Calif. on June 24, 2014.

Splash News

Alyssa Milano Snacks While Pregnant

Alyssa Milano curbs her pregnancy cravings with Pasta Chips while out for a stroll in Beverly Hills, June 23, 2014.

Michael Simon

Christina Aguilera Shows Off Her Bump

Christina Aguilera posted this photo to her Twitter, June 21, 2014, with the caption, "Happy 1st Day of Summer! Keep those lips hydrated!"

@xtina/Twitter

Hayden Panettiere Bares Her Baby Bump

Hayden Panettiere and her boxer fiance Wladimir Klitschko are seen on a relaxing holiday in Porto Cervo.

CIAO/AKM-GSI

Kelly Rowland Reveals Her Bump in a Yoga Photo

Kelly Rowland posted this photo to her Instagram, June 19, 2014.

@kellyrowland/Instagram

Stacy Keibler Flaunts a Bigger Baby Bump

Stacy Keibler celebrates a pre-July 4th party at a popchips BBQ in Los Angeles, June 17, 2014.

Michael Simon

Rachel Bilson Shows Off Her Bump in a Bikini

Rachel Bilson is spotted on the beach in Barbados, June 14, 2014.

Islandpaps/Splash News

How Stacy Keibler Stays Healthy During Her Pregnancy

Actress Stacy Keibler shows off her growing baby bump while enjoying a relaxing hike on June 9, 2014 in Los Angeles, Calif. Stacy is expecting her first child with husband Jared Pobre and had her baby shower over the weekend!

FameFlynet

Mila Kunis Dresses Up Her Bump in a Little Black Dress

Actress Mila Kunis arrives at the Los Angeles premiere of "Third Person" at Pickford Center for Motion Study on June 9, 2014 in Hollywood, California.

Christina Aguilera and Matt Rutler Show Off Her Bump

Drew Barrymore Shows Off Her Huge Baby Bump

A heavily pregnant Drew Barrymore is seen stopping for takeout at Hope Li Chinese restaurant in Culver City and then shortly after the Apple Pan for take-out, also in Culver City, Calif. on April 15, 2014.

Splash News

Mila Kunis Shows Off Growing Baby Belly

Mila Kunis poses during the 2014 MTV Movie Awards on April 13, 2014 in Los Angeles.

Michael Buckner/Getty Images

Snooki Disguises Her Barely-There Bump

Nicole "Snooki" Polizzi is seen arriving at Los Angeles Airport on April 9, 2014.

Ramey

Olivia Wilde Has a Month to Go In Her Pregnancy

Olivia Wilde is seen walking in Downtown on April 7, 2014 in New York City.

Alessio Botticelli/GC Images/Getty Images

Ginnifer Goodwin Looks Ready to Pop!

A very pregnant Ginnifer Goodwin goes shopping in Hollywood on April 7, 2014.

NPG.com

Pregnant Stacy Keibler Keeps Her Bump Under Wraps

Stacy Keibler goes for a hike, April 1, 2014, in Los Angeles.

VM/Dmac/FameFlynet

How Kendra Wilkinson Stays Fit While Pregnant

Kendra Wilkinson plays soccer in Los Angeles, March 30, 2014.

Chinchilla/Bauer-Griffin/GC Images/Getty Images

Drew Barrymore: Ready For Baby!

A very pregnant Drew Barrymore has lunch with husband Will Kopelman and their daughter, Olive, at Messhall Kitchen in Los Feliz, Calif. on March 23, 2014.

Dean/MRM/NPG.com

Ciara Celebrates with Her Fiance at Her Baby Shower

Ciara, left, and Future, right, attend a baby shower in Ciara's honor on March 22, 2014 in Los Angeles.

Frank Micelotta/PictureGroup

Kristin Cavallari Talks Baby Names with Nick Lachey

Kristin Cavallari posted this photo to Twitter on March 20, 2014.

@kristincav/Twitter

Olivia Wilde Shows Off a Casual, Cool Maternity Look

Olivia Wilde is seen in the West Village, March 20, 2014 in New York.

Alo Ceballos/GC Images/Getty Images

Ciara Is a Hippie Mother-to-Be!

Ciara shops at Barney's in Beverly Hills on March 19, 2014.

Vladimir Labissiere/Splash News

Jenna Fischer Steps Out with a Giant Baby Bump

Jenna Fischer stops to fill up her gas tank while out running errands in Glendale, Calif. on March 18, 2014.

FameFlynet Pictures

Elsa Pataky Looks Ready to Pop

Elsa Pataky steps out to shop for jewelry in Beverly Hills, Calif. on March 17, 2014.

Ginnifer Goodwin Flaunts Her Baby Bump with Fiance Josh Dallas

Josh Dallas and Ginnifer Goodwin seen at the airport in Vancouver, Canada on Jan. 5 2014.

Pacific Coast News

JWoww Pregnant! Jersey Shore Star Expecting First Baby

Olivia Wilde is seen arriving at LAX airport on January 5, 2014 in Los Angeles, Calif.

Bauer Griffin/Getty Images

JWoww Pregnant! Jersey Shore Star Expecting First Baby

Jennifer "JWoww" Farley and Roger Mathews arrive at the"Icons & Idols Party" on Aug. 25, 2013 in New York. The "Jersey Shore" star revealed she and fiance Roger Mathews are expecting their first child in July, 2014.

Jennifer Love Hewitt Is Ready to Pop!

Kim Zolciak Is So Ready To Have Twins

Expecting mom Emily Blunt exposes her bare baby bump while sunbathing with her husband John Krasinski and pal Bradley Cooper, Nov. 18, 2013. The trio hung out on the beach during a off day in filming for Bradley and John on their latest untitled film from Cameron Crowe. Emily and John are expecting their first child together and this is the first rare glance at Emily's growing bump.

AKM-GSI

Kim Zolciak Is So Ready To Have Twins

Kim Zolciak shows her belly in a photo she posted to Instagram, Nov. 17, 2013.

Melissa Rycroft Reveals a Tiny Baby Bump

Melissa Rycroft posted a selfie to her Instagram account on Oct. 28, 2013, and wrote, "Good morning little baby bump Well... still kinda looks like I ate a little too much, but still such a sweet sight!"

Melissa Rycroft Strickland/Instagram

Gwen Stefani and Rachel Zoe Compare Baby Bumps

Rachel Zoe and her pal Gwen Stefani, left, shared this image of the two of them comparing baby bumps, on her Instagram account, Oct. 22, 2013.

rachelzoe/Instagram

Busy Philipps Introduces Baby Cricket

New mom Busy Phillips with new baby Cricket at a house party, Oct. 20, 2013 in Los Angeles.

Halle's Big Bump

Halle Berry shows off her growing baby bump as she picks up some goodies at Bristol Farms in West Hollywood, Aug. 30,2013. The expecting actress dressed in a grey cowl neck top over a black maxi skirt, topping her simple chic pregnancy outfit with a black tweed fedora hat.

AKM-GSI

Halle's Big Bump

A very pregnant Halle Berry joined boyfriend Olivier Martinez on a date night at Madeo, in Beverly Hills, Cali., Aug. 20, 2013.

Kim K Shows Off Growing Bump

Kim Reveals Sizable Belly

Kim Kardashian tweeted "baby love" and posted this photo of herself wearing black skintight leggings and a white sheer top rolled up to reveal her sizable belly on April 6, 2013.

@Kimkardashian/Twitter

Kristen Bell Flaunts Baby Bump

Hilaria Baldwin showed off her growing baby bump when she attended the Guild Hall: Academy Of The Arts Lifetime Achievement Awards at The Plaza Hotel March 4, 2013 with husband Alec Baldwin. The couple announced in February that they are expecting her first child together.

Cindy Ord/Getty Images

Kristen Bell's Baby Bump

Kristen Bell isn't afraid to hide her pregnant belly. The "House of Lies" star looked like she was about to pop when she exposed her baby bump in Los Angeles, Feb. 26, 2013. Bell is expecting her first child with fiancé Dax Shepard and she is due in late spring.

FameFlynet

Shakira Strips Down

Meet Gisele Bündchen's 9-week-old daughter Vivian Lake Brady. The supermodel introduced her baby girl to the world in a Facebook post Feb. 8, 2013. "Love is everything!!! Happy friday, much love to all," she wrote. Vivian, who was born Dec. 5, 2012, is a little sister to brothers Benjamin, 3, and John, 5. Their father is New England Patriots quarterback Tom Brady.

Gisele Bundchen/Facebook

Channing Tatum's Wife Reveals Bump

Columbian-born singer Shakira poses while pregnant with her boyfriend, Spanish soccer star Gerard Pique. The singer and UNICEF Goodwill Ambassador posted the photo on her Twitter page and is asking fans to donate money to their online baby shower that benefits UNICEF. "We'd like to celebrate the imminent birth of our first child with all of you," Shakira wrote.

UNICEF/AP Photo

Holly Madison's Baby Bump

Channing Tatum and Jenna Dewan-Tatum spent the holidays in the Caribbean, where photographers got a glimpse of Jenna's growing baby bump on Dec. 27, 2012. The "Magic Mike" star and his wife of three years are expecting their first child in 2013.

PacificCoastNews.com

Holly Madison's Baby Bump

A pregnant Holly Madison showed off her baby bump in Las Vegas on Dec. 17.

Paquin Takes Twins for Stroll

Pregnancy clearly agrees with Shakira. The singer posted this photo with boyfriend Gerard Pique on Twitter Nov. 27, 2012, writing, "I could have another 9 months like this!" She's expecting her first child next year.

@shakira/twitter

Anna Paquin's Twins

New mom Anna Paquin kept her twins close in a sling made for two, as she took a stroll in Venice Beach, Calif., Nov. 25, 2012. The twins' father is Paquin's fiance and "True Blood" co-star Stephen Moyer. The pair have remained mum about the twins' genders and names since their birth in September.

Gaz Shirley/Pedro Andrade/PacificCoastNews.com

'Girls' Star's Racy Pregnancy Pose

Prior to giving birth to her daughter, Gisele showed off her flawless pregnant body in a bikini on Miami Beach on Nov. 4, 2012.

Splash News

Reggie Bush's Girlfriend Pregnant

Jemima Kirke, who stars in HBO's "Girls," has taken the baby bump photo shoot to a whole new level. The 27-year-old soon to be mom of two posed nude, not covering her breasts, for <a href="http://www.vice.com/read/one-in-the-oven-0000310-v19n10-girls-jemima-kirke">VICE</a>. Here's one of the tamer shots from the series.

Richard Kern for VICE

Nick Lachey's Baby Makes Debut

Reggie Bush can soon add dad to his resume. The Miami Dolphins running back and his girlfriend of a year, Lilit Avagyan, are expecting their first child together, Bush told the Paul and Young Ron Morning Show. The NFL star said the couple is excited but doesn't know yet if they're having a boy or girl, although he said he's hoping for a boy.

Jesse Grant/Getty Images; Michael Kovac/FilmMagic)

Giuliana and Bill Show Off Baby

Vanessa Lachey posted this photo of her newborn on her Twitter with this message, "@NickSLachey and I are honored and humbled to introduce you to the new Love of our lives, Camden John Lachey," Oct. 1, 2012. The singer and his actress and television host wife welcomed their first child in early September.

@VanessaLachey/Twitter

Bill and Giuliana's new baby

Two weeks after the birth of their son, Giuliana and Bill Rancic shared the cover of Life & Style with little boy Edward Duke. His nickname is royal -- Duke. He was born via gestational carrier on Aug. 29. "I had always heard that when you have a baby it completes your life -- and it's true," Giuliana said.

Life & Style

Anna Paquin Blooming

Amber Rose went the Beyonce route to announce her pregnancy. The model revealed her growing baby bump on the red carpet of the MTV Video Music Awards, like Beyonce did in 2011. This will be the first child for Rose, 28, and her fiance Wiz Khalifa, 24.